<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button onclick="getDate()"> 获取数据 </button>
</body>

<script>
    function getDate(){
        const query = `
        query Account($username: String){
            account(username: $username)
        }
        `
        const variables = {username:'李大'}

        fetch('/graphql',{
            method:'POST',
            headers:{
                'Content-Type':'application/json',
                'Accpet':'application/json'
            }
        })
    }
</script>
</html>